Q-Switched Giant Pulsed Erbium-doped All-fibre Laser with V2ZnC MAX Phase Saturable Absorber
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Abstract:
MXenes, drawn from MAX phases are special two-dimensional substances with numerous advantages in nonlinear optics, specifically in giant and ultrashort pulsed-laser applications. Ti3C2Tx, and Ti2CTx nanosheets however, rapidly deteriorate under ambient conditions, limiting their applications. This paper demonstrates how excellent modulation depth of one of the MAX phase compounds V2ZnC makes it a brilliant saturable absorber in passively Q-switched all-fibre pulsed lasers—integrated such that a 16.73-µm V2ZnC-PVA thin film acts as saturable absorber in the laser. Saturable and non-saturable absorptions were found to be 13.2 % and 10.47 %, while saturation optical intensity and modulation depth were 6.25 kW/cm2 and 12.43 %, respectively, illustrating the optical nonlinearity. The superiority of MAX-PVA, fabricated in four distinct ratios was demonstrated by the fact that it self-starts a giant pulsed laser at pump power as low as 22.5 mW and firmly accomplished 120.6 kHz repetition rate with a pulse width of 2.08 µs. It is a fine SA for the use of pulsed-laser production using all-fibre laser due to fabrication simplicity and great optical, thermophysical, and mechanical qualities.
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Fundamental Research Grant Scheme
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